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d4a67d9dc8
This patch adds initial support for various Atheros SoCs based on the MIPS 24Kc core. The following models are supported at the moment: - AR7130 - AR7141 - AR7161 - AR9130 - AR9132 - AR7240 - AR7241 - AR7242 The current patch contains minimal support only, but the resulting kernel can boot into user-space with using of an initramfs image on various boards which are using these SoCs. Support for more built-in devices and individual boards will be implemented in further patches. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> Cc: linux-mips@linux-mips.org Cc: Luis R. Rodriguez <lrodriguez@atheros.com> Cc: Cliff Holden <Cliff.Holden@Atheros.com> Cc: Kathy Giori <Kathy.Giori@Atheros.com> Patchwork: https://patchwork.linux-mips.org/patch/1947/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/*
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* Atheros AR71XX/AR724X/AR913X specific prom routines
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*
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* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/string.h>
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#include <asm/bootinfo.h>
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#include <asm/addrspace.h>
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#include "common.h"
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static inline int is_valid_ram_addr(void *addr)
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{
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if (((u32) addr > KSEG0) &&
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((u32) addr < (KSEG0 + ATH79_MEM_SIZE_MAX)))
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return 1;
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if (((u32) addr > KSEG1) &&
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((u32) addr < (KSEG1 + ATH79_MEM_SIZE_MAX)))
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return 1;
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return 0;
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}
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static __init void ath79_prom_init_cmdline(int argc, char **argv)
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{
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int i;
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if (!is_valid_ram_addr(argv))
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return;
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for (i = 0; i < argc; i++)
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if (is_valid_ram_addr(argv[i])) {
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strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
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strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline));
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}
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}
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void __init prom_init(void)
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{
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ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
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}
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void __init prom_free_prom_memory(void)
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{
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/* We do not have to prom memory to free */
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}
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